El Niño/La Niña Update (July 2007) Publication 20 July 2007 Adobe Stock / Microgen A La Niña event could, more likely than not, develop in the second half of 2007. The last WMO El Niño/La Niña Update in March 2007 also noted an enhanced likelihood of La Niña development, and conditions were moving quite rapidly in that direction until a reversal occurred during May and early June. There remains considerable uncertainty over the timing and magnitude of further cooling in the central and eastern Equatorial Pacific. View Report Share: Other editions Publication 01 April 2023 El Niño/La Niña Update (April 2023) Publication 01 November 2022 El Niño/La Niña Update (November 2022) Publication 01 August 2022 El Niño/La Niña Update (August 2022) View all editions